# step 1: 安装必要的一些系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2 &&
# Step 2: 添加软件源信息
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo &&
# Step 3
sudo sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo &&
# Step 4: 更新并安装Docker-CE
sudo yum makecache fast &&
sudo yum -y install docker-ce &&
# Step 4: 开启Docker服务 
sudo service docker start &&


# add 镜像
sudo mkdir -p /etc/docker &&
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "log-driver":"json-file",
  "registry-mirrors": ["https://jdju8r3i.mirror.aliyuncs.com"],
  "log-opts": {"max-size":"20m", "max-file":"3"}
}
EOF
sudo systemctl daemon-reload &&
sudo systemctl restart docker &&
sudo docker -v